Abstract: This study investigates the vibration and buckling characteristics of laminated shell structures under thermo-electro-magnetic coupling. The shell outer,middle,and inner layers serve as the thermal insulation layer,graphene-reinforced functionally graded composite layer,and piezoelectric layer,respectively. The material properties of the composite layer in the truncated conical shell are calculated using the modified Halpin-Tsai model. The thermal conduction temperature field of the truncated conical shell is established based on the one-dimensional heat conduction equation. The governing equations for the vibration and buckling of the truncated conical shell are formulated and solved based on Hamilton's principle and Maxwell's equations. Through numerical analysis,this study discusses the effects of factors such as ambient temperature,piezoelectric layer voltage,and shell half-cone angle on the natural frequency and critical buckling temperature of the truncated conical shell. The results indicate that both the natural frequency and critical buckling temperature of the laminated truncated conical shell decrease as the ambient temperature,piezoelectric layer voltage,and shell half-cone angle increase.